Race Condition in django-tastypie Cache Throttle

Executive Summary

CVE-2026-16208 affects django-tastypie up to version 0.15.1. It involves two issues: 1) ApiKeyAuthentication accepts credentials via URL parameters or POST fields instead of requiring the Authorization header, exposing them in logs and browser history. 2) CacheThrottle and CacheDBThrottle use non-atomic cache operations, allowing attackers to bypass rate limits through concurrent requests.

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Detection Guidance

To detect this vulnerability, check if django-tastypie 0.15.1 or earlier is installed using pip list or pip show django-tastypie. Inspect API authentication logs for credentials passed via URL parameters or POST fields instead of the Authorization header. Monitor rate limiting logs for CacheThrottle/CacheDBThrottle bypass attempts during high concurrency.

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Impact Analysis

If exploited, attackers could bypass rate limits by sending concurrent requests, potentially overwhelming the system. Credentials exposed via URL parameters or POST fields could lead to unauthorized access if intercepted. The complexity of exploitation is high, making attacks less likely but still possible.

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Compliance Impact

Exposing API credentials via logs or URLs could violate data protection requirements under GDPR or HIPAA, as it may lead to unauthorized access to sensitive data. Non-compliance risks include fines and reputational damage.

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Mitigation Strategies

Immediately upgrade django-tastypie to the latest version if available. Enforce the use of the Authorization header for API credentials and disable GET/POST parameter fallback. Implement atomic cache operations for throttling to prevent race conditions. Review and update rate limiting configurations.

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